#include <stdio.h>
#include <math.h>
 
#define PI 3.14159
 
int main() {
    float radius, tinggi, luasPermukaan;
 
    // Meminta input dari pengguna
    printf("Masukkan radius alas tabung: ");
    scanf("%f", &radius);
    printf("Masukkan tinggi tabung: ");
    scanf("%f", &tinggi);
 
    // Menghitung luas permukaan
    luasPermukaan = 2 * PI * radius * (radius + tinggi); // Luas permukaan = 2πr(r + h)
 
    // Menampilkan hasil
    printf("Luas permukaan tabung: %.2f\n", luasPermukaan);
 
    return 0;
}
 

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